Zoom in/out of your OSX Desktop

Here's a tip I discovered by mistake, but has come in handy on more than one occasion: late night coding sessions when my eyes are too tired to focus on small text, checking out people's miniature sized pics on Facebook, just marveling in the smooth zoom capabilities of OS X... I know, I need to get out more.

If you hold down CTRL while scrolling your mouse wheel you can zoom in and out of your display! Even better is when you move your mouse around, it pans around the screen.